The ETX-80AT-TC BB (f/5) Achromatic Refractor by Meade is a great beginner telescope . User-friendly with minimal set up and maintenance, the Meade ETX-80AT-TC (f/5) Achromatic Refractor features great optical and mechanical quality, so instead of fussing too much with the equipment, you can enjoy the view. Using a lens system to produce images, this Meade ETX-80AT-TC (f/5) Achromatic Refractor is a great portable telescope for night lunar, planetary, star and daytime terrestrial observation. The ETX-80AT-TC BB (f/5) Achromatic Refractor computerized telescope is ideal for deep sky views and provides GoTo Efficiency. Locate and track stars and objects in the sky, so long as you are able to provide the alignment coordinates.